在位图上画图

[sunjing]

在一幅图象上用DrawText()写上几个字，，怎样把他和原有的图象一起保存
到原来的位图中 ？

[lz_0618]

涉及到设备相关的位图（DDB）到设备无关的位图(DIB)的转换问题,建议到http://www.codetools.com/或http://codeguru.earthweb.com/网站下载个例子看一下

[y616]

在内存设备描述表中画了！！

[coolxiao]

来晚了=）

[lanzhengpeng2]

class CFastDib
{
...
LPBITMAPINFOHEADER m_pHeader;
RGBQUAD m_pColorTable;
LPBYTE m_pImage;
//
LPBYTE m_pImageForDC;
HBITMAP m_hOldBitmap;
HBITMAP m_hBitmap;
HDC m_hDC;
HDC GetDC(void);
void ReleaseDC(void);
...
};
//-------------------------------------------------------------------
//Create a memory device context for this
//-------------------------------------------------------------------
HDC CFastDib::GetDC(void)
{
m_hDC = ::CreateCompatibleDC(NULL);
if(m_hDC == NULL){
return NULL;
}
m_hBitmap = ::CreateDIBSection(NULL,(LPBITMAPINFO)m_pHeader,DIB_RGB_COLORS,(LPVOID *)&m_pImageForDC,NULL,0);
m_hOldBitmap = (HBITMAP)::SelectObject(m_hDC,m_hBitmap);
//Copy Color Table
if(m_pHeader->biBitCount <= 8)
{
::SetDIBColorTable(m_hDC,0,m_pHeader->biCrlUsed,m_pColorTable;);
}
::memcpy(m_pImageForDC,m_pImage,m_pHeader->biSizeImage);
return m_hDC;
}
//-------------------------------------------------------------------
//Copy data from device context that create by GetDC() and delete it
//-------------------------------------------------------------------
void CFastDib::ReleaseDC(void)
{
::memcpy(m_pImage,m_pImageForDC,GetSize());

::SelectObject(m_hDC,m_hOldBitmap);
::DeleteObject(m_hBitmap);
::DeleteDC(m_hDC);
}

[sunjing]

多谢！！分已给（50分）